Friction-catch hinge



Sept. 2, 1952 5. $055 2,608,713

FRICTION-CATCH HINGE Filed July 30, 1949 INVENTOR. Samue/ 50$ AttorneysPatented Sept. 2, i952 Samuel Soss, Detroit, Mich., 'assignor' to Soss rif Manufacturing Company, Detroit, Mich.,-a core poration of Maine.

Application .Tuly so, 1949, Serial N 0. 107,6 58 f 1 Claim. (01.16-140)This invention relates to a combined hinge and hold-open. It is theobject of the invention to provide a concealed hinge which, by a verysimple but effective arrangement of the hinge elements alone will holdthe door open at allthe Soss Patent No. 2,178,271, embodying myhold-open improvement.

Fig. 2 is a diagrammatic view of the hinge showing the hinge in closedposition.

Fig. 3 is a similar view showing the hinge in open position.

Fig. 4 is a detail of one of the bowed spring leaves.

I is the face plate. 2 is the hinge box, here in the form of an archedupper and lower member connected by a heavy side wall 3. These membersform one hinge butt. The arched top and arched floor of the hinge boxhave channels 4 and 5 which form grooves for the travelling pin 6 whichfastens the ends of the leaves or laminations I together. The pin 8travels in groove or slot 9 in the floor of the left hand hinge butt anda similar groove in the top of the hinge box. This travelling pin 8connects together the leaves ll] of the two hinge arms. There are fourleaves or laminations shown in connection with each hinge arm or link.The hinge arms ID are pivoted to a fixed pin H fixed in the face plate Iof the right hand hinge butt. The hinge leaves I are pivoted on a fixedhinge pin l2 permanently fixed in the face plate I3 of the left handhinge butt. All the hinge arms and hinge leaves are united near theirmid-portion by a knuckle pin [4. This is one type of Soss hinge shownand claimed in Soss Patents Nos. 880,697 and 2,178,271.

Two hinge arms or links are pivoted on a fixed pin of one hinge butt andslidably pivoted to the other hinge butt by means of a pin and slotarrangement. The other two arms or links are pivoted to a fixed pin onthe hinge butt which has the slots or grooves for the set of hinge armsfirst above described. These last mentioned arms 2. have a slot and pinpivotal arrangement in the hinge box of the other hinge butt. As thedoor opens it not only pivots outwardly but by reason of these slot andpin arrangements it also throws out without the aid of the usual gooseneck arm used in concealed hinges. The number of hinge links may bevaried and also the number of laminations in one link.

The same hinge action and throw-out of the door is achieved in otherpatents Soss hinges (Soss Patents 1,984,092 and 2,021,702) by means of aparallelogram of links.

These severalstyles of overlapping and folding hinge arms, each withseveral leaves are appropriate to take myimprovement. My improvementconsists in substituting for the conventional hinge leaf of one arm, adistorted or bowed spring leaf or lamination which bows out and is inthe path of the hinge leaf of the adjoining arm when the two hinge armsfold or unfold into ,or out of overlapping position. The type of hingearm and hinge leaves shown in the drawings where the hinge leaves areall of one pattern is very well adapted to take my bowed spring hingeleaf which is designated 24. This leaf has a bowed portion [5 with apeak or ridge Hi. It has a slot 20 in one end through which passes thepin 6. This slot allows the spring steel bowed leaf to be flattened andcompressed. A slot is also provided in the spring leaf that is mountedon pin 8. After the door opens a slight space, the bowed portion of thehinge leaf comes in overlapping relation with the adjoining hinge leafof the other arm and the spring hinge leaf is put under stress andfriction develops and this tends to hold the door in any open position.

It will be seen that this bowed spring lamination may be used in anytype of hinge which has two or more hinge links made up of two or morestamped metal laminations and in which the hinge links fold and lap oneover the other in opening the door and unfold from the overlappingrelation in the closing of the door, so I want it understood that myimprovement is not limited to the style of hinge that is shown in thedrawmgs.

What I claim is:

A concealed hinge having in combination a pair of hinge butts forsecuring one hinge butt to a swinging'door pillar and the other hingebutt .to a stationary pillar, each butt containing a hinge box, two ormore links pivoted to each other intermediate their ends, one of saidlinks having one end pivoted in one hinge box to slide and pivot in theone hinge box so that the one link will swing in this hinge box but byreason of a pin and 'slot arrangement the link moves bodily inwardly andoutwardly of said one hinge box, the opposite end of said one link beingsimply pivotally supported by a pin to the other hinge box, the secondlink having the same pivotal and sliding arrangement with the otherhinge box and the same pivotal support in said one'hin'ge box, the saidlinks unfolding outwardly into near registry one with the other when thedoor is opened,

a. bowed spring leaf which, when the links move' outwardly into theoverlapping andpartlyregis l tering relation, is flattened to putstress-0n the two links and thereby resist the folding in of the linksto close the door, the bowed spring leaf.

having a slotted end for engaging over -the pivot ester REFERENCES CITEDThe'following references are of reoord in the 7 file of this patent: oneof the links having at least two laminations I or leaves, one of thelaminations or leaves being,

UNITED STATES PATENTS Name Date .760,831- White et a1. May 24, 1904"880,697 iSoss Mar. 3, 1908 13961588 .Nord June 3, 1924 2,178,271 SossOct. 31, 1939

